101242859 has 4 divisors (see below), whose sum is σ = 102902640. Its totient is φ = 99583080.

The previous prime is 101242853. The next prime is 101242861. The reversal of 101242859 is 958242101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 958242101 = 1213 ⋅789977.

It is a cyclic number.

It is not a de Polignac number, because 101242859 - 2¹² = 101238763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101242853) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 829799 + ... + 829920.

It is an arithmetic number, because the mean of its divisors is an integer number (25725660).

Almost surely, 2^101242859 is an apocalyptic number.

101242859 is a deficient number, since it is larger than the sum of its proper divisors (1659781).

101242859 is an equidigital number, since it uses as much as digits as its factorization.

101242859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1659780.

The product of its (nonzero) digits is 5760, while the sum is 32.

The square root of 101242859 is about 10061.9510533494. The cubic root of 101242859 is about 466.0739182294.

The spelling of 101242859 in words is "one hundred one million, two hundred forty-two thousand, eight hundred fifty-nine".